Davit



`C. H. FULLER DAVI T Jan. 4, 19.27'.

'Filed Dec. s. 1925 2 Sheets-Sheet l Jan. 4 1927.

c. H. FULLER DAVIT Pile'd Dec. e. 1925 2 Shegts-Sheet 2 IIWN /7/5Afm/MEV Patented Jan. 4,1927. 'f i 1,613,030

unirse srArEs PATENT OFFICE.

CHARLES H. FULLER, OF PORTLAND, OREGON.

nAvrr.

Application nle. December 8., 1925. Serial No. 73,981.

r his invention relates generally to life end nuts 26. In each boom headare moun boats such as are carried on vessels of all ed the 4sheaves 27,28, 29 and 30. In each types, and particularly to a special form of eye14 of the boat 12 is hooked a boat block davit to be used for launchinglife boats 31 which is provided with a single sheave.

from a ships deck or for raising the boat From a winch (not shown) areled the .60 from the water to a deck or wharf. boat lines 32 and 33which always operate The vfirst object of this invention is to inunison. The position and operation of provide an exceedingly simple andefcient one line only will be described, as they are form of davit bymeans of which a lite identical in all respects.

boat can be quickly and safely launched. rlhe boat handling line 32, forinstance, 65 The second object is to so construct the passes from itsdrum on the winch through davit that yit will be very light and strongits deck block 34. then around the boom and employ only the vsimplestform of rigsheave 23, then through the boat block 3l ging f and is thenmade fast to the sheave 27, as The third object is to so construct sameshown, or is brought back down to the boat 7o that by the mere passingof a bight of each block 31 and made fast thereto, if additional boatline around a snatch block the davit purchase is desired. will operateinboard instead of outboard, Y A snatch block 35 is mounted on the deckfor the purpose of handling boats back of 10 directly inboard from eachdeck block or inboard from the davit. 34, and their function will beexplained 75 These, and other objects, will become more later. apparentfrom the specilication following as Also leading from the winch, andalways illustrated in the accompanying drawings, operating in unison,are the boom operating in which: lines 36 and 37, only one of which willbe Figure 1 is a front elevation of the davit described. The boom line36 passes from its 80 of which Figure 2 is a vertical transverse drum onthe winch through the deck block section taken along the line 2-2 inFigure 38, thence between the sheaves 21 and 23,

1 but not showing the boat in section. In thence over the sheave 30,thence around this view various positions ofthe booms are the sheave 2Oand is then made fast to the shown in dotted lines. Figure 3 is a plansheave 29. Any other fastening could, of 85 of Figure 1. Figure l is anenlarged front course, be substituted `for the sheave 29. elevation ofthe upper end of the mast and lWhen the device is desired to handle lifeboom. Figure 5 is an end elevation of the boats 0n the inboard side ofthe davit it is mast portion of Figure 4. Figure 6 is only necessary toslip the bight of each of an end elevation of the boom portion oftheline 32 and 33 (between the blocks 34 90 Figure 4. Figure 7 is an endelevation of and their lOOOm heads) aIOund their respecthe foot for themast and boom of which tive snatch blocks 35, which reverses the 0p-Fgure 8 is a front elevation, eration of the boom causing its action 'tobe Similar numbers of reference refer to the lllbOald instead Ooutboard. 4.9 same parts throughout the several views. The operation ofthe device is as follows: 95

Referring in detail to the drawings, on When the lines are in theposition shown in the deck 1() on the side 11 of a ship is placed thedrawings-that is, not using the snatch v a life boat 12 on the supports13. kThe blocks 35-and it is desired to launch a boat 12 is provided ateach end with an eye boat, the boat lines 32 and 33 are hauled 1.5 14for handling purposes. On the deck 10 sutliciently by means of the winchto make 100 at each end of the boat 12 is secured a foot the boat clearthe deck and its supports, 15 which supports the rigid short verticaland the boom lines 36 vand 37 are then mast 16 and the boom 17 which ishinged on slacked away, also under the control of the the pin 18. winch.The outboard position of the blocks On the upper end of each mast ismount- 3e causes the boat to swing free of the ships 105 ed a mast vhead19 on which are mounted side and when they clear, both sets of lines thesheaves 20, 21, 22 and 23. On the upper can be slacked away as desired.end of each boom 17 is mounted a boom head To raise the boat from thewater to the 24., both of which are joined together by ships deck, theoperation is simply remeans of a rod 25 which is provided lwith versed.110

To operate the davit for inboard position, the lines 32 and 38 arepassed around the snatch blocks 35 and the boom and boat lines arehandled as before.

I am aware that many forms of life boat launching apparatus have beenconstructed in the past; I therefore do not claim my device broadly7 butI do intend to cover all such forms and modifications thereof as fallfairly Within the appended claims.

I claim:

l. A davit for handling lii'e boats having7 in combination, a stationarymast; a boom hinged at one side of said mast having a head over-hangingsaid mast; a plurality of sheaves on said mast and boom; an inboard deckblock; an outboard deck block; a boat line; a line for said outboarddeck block reeved between said boat block and said boom sheaves; a boomhandling line passing through said inboard deck block, thence between apair of said mast sheaves and then reeved between said boom head sheavesand said mast head sheaves; and an inboard snatch block for each boatline for receiving the bight of its boat line at a point between theoutboard block and the boom head.

2. In a davit, the combination of a pair of spaced masts each of Whichhas three sheaves mounted at the top thereof tWo of Which are verticallydisposed; a boom hinged at the outer side of each mast, each of saidbooms having a head over-hanging its adjacent mast, said boom headshaving one sheave in line with said vertically disposed mast sheaves andone sheave over the third mast sheave and also having two boat handlingsheaves; a boat block under said boat handling sheaves; an outboard deckblock; an inboard deck block; a boat line passing through each outboarddeck block, thence through one oi the boom boat sheaves, thence throughthe boat block and thence to the boom,y and boom handling lines passingthrough each inboard deck block, between said vertically disposed mastsheaves, then over the superimposed boom sheave and then around thethird mast sheave to a point of fastening on said boom,

CHARLES H. FULLER.

